The ability to control the path a signal takes through microwave circuitry is crucial when designing RF systems. The component that allows for the control of the signal path is called a switch, and it is the microwave component that this thesis will focus on. Switches are widely used in the growing defense and space industries, both of which have strict requirements on their systems. This thesis aims to investigate four switch topologies and compare them to establish which topology is most suitable in high-performance systems where high isolation and wide bandwidths are essential parameters. The different topologies were simulated using Cadence AWR Microwave Studio to evaluate the parameters of interest. Built-in models for PIN diodes were employed to capture the nonlinear nature of the diodes and quantify the linearity of the switches. Measurements of PIN diodes using a spectrum analyzer and a vector network analyzer were used to confirm that the models of the PIN diode resembled the actual characteristics of PIN diodes. Out of the four topologies investigated, the series, shunt, series-shunt and double shunt, it was concluded that the series-shunt topology was most suitable for wideband multiple-throw switches. The double shunt topology was more suitable for SPST switches and narrowband SPDT switches. From this thesis, it will be possible to conclude which topology is most suitable for a particular need and what key design parameters will impact the switch’s performance. / Förmågan att styra vägen en signal tar genom mikrovågskretsar är en avgörande förmåga i konstruktionen av de flesta RF-system. Komponenten som tillåter styrning av signalvägen kallas en omkopplare och är den mikrovågskomponent som detta examensarbete kommer att fokusera på. RFomkopplare kan realiseras på många olika sätt och kan integreras i flera typer av vågledande strukturer såsom mikrostrips, striplines och vågledare. Omkopplingselementen kan realiseras på många sätt, med användning av transistorer och dioder är de mest etablerade sätten. Sådana omkopplare används i stor utsträckning inom försvars- och rymdindustrin som båda har strikta krav på dess komponenter. Avhandlingen syftar därför till att undersöka ett antal switchtopologier och jämföra dessa för att fastställa vilken topologi som är mest lämplig i högpresterande system där hög isolering och breda bandbredder är viktiga parametrar. De olika topologierna simulerades med hjälp av Cadence AWR Microwave Studio för att utvärdera parametrarna av intresse. Den inbyggda modellen för PIN-dioder användes också för att fånga diodernas olinjära natur för att kvantifiera omkopplarnas linjäritet. Mätningar av PIN-dioder med användning av en spektrumanalysator och en Nätverksanalysator gjordes för att bekräfta att modellerna av PIN-dioderna efterliknade PIN-diodernas faktiska beteende. Det fastslogs att series-shunt-topologin var mest lämpad för bredbandsomkopplare med flera utgångar. Dubbel-shunt-topologin var mer lämplig i SPSTomkopplare och i smalbandiga SPDT-omkopplare. Från detta examensarbete kommer det att vara möjligt att dra slutsatser kring vilken topologi som är mest lämplig för ett särskilt behov tillsammans med vilka designparametrar som kommer att påverka omkopplarens prestanda.

State-of-the-art SiGe BiCMOS technologies leverage the maturity of deep-submicron silicon CMOS processing with bandgap-engineered SiGe HBTs in a single platform that is suitable for a wide variety of high performance and highly-integrated applications (e.g., system-on-chip (SOC), system-in-package (SiP)). Due to their bandgap-engineered base, SiGe HBTs are also naturally suited for cryogenic electronics and have the potential to replace the costly de facto technologies of choice (e.g., Gallium-Arsenide (GaAs) and Indium-Phosphide (InP)) in many cryogenic applications such as radio astronomy. This work investigates the response of mixed-signal circuits (both RF and analog circuits) when operating in extreme environments, in particular, at cryogenic temperatures and in radiation-rich environments. The ultimate goal of this work is to attempt to fill the existing gap in knowledge on the cryogenic and radiation response (both single event transients (SETs) and total ionization dose (TID)) of specific RF and analog circuit blocks (i.e., RF switches and voltage references). The design approach for different RF switch topologies and voltage references circuits are presented. Standalone Field Effect Transistors (FET) and SiGe HBTs test structures were also characterized and the results are provided to aid in the analysis and understanding of the underlying mechanisms that impact the circuits' response. Radiation mitigation strategies to counterbalance the damaging effects are investigated. A comprehensive study on the impact of cryogenic temperatures on the RF linearity of SiGe HBTs fabricated in a new 4th-generation, 90 nm SiGe BiCMOS technology is also presented.

Dauguma autorių, nagrinėjusių skirtingos negalios krepšininkų žaidėjų fizinių ypatybių ir specialiųjų gebėjimų rodiklius, pabrėžė, kad sunkesnės negalios žaidėjų (1—2 balų) rodikliai blogesni negu lengvesnės. Tačiau mažai tyrimų atlikta nagrinėjant programų poveikį vežimėlių krepšinio žaidėjų fizinėms ypatybėms ir specialiesiems gebėjimams. Šiuo požiūriu aktualūs ir nauji tyrimai nagrinėjantys jėgos ugdymo programos poveikį vežimėlių krepšinio žaidėjų fizinėms ypatybėms ir specialiesiems gebėjimams. Tyrimo tikslas: nustatyti ir įvertinti jėgos ugdymo programos poveikį vežimėlių krepšinio žaidėjų specialiesiems fiziniams gebėjimams. Tyrimo tikslui įgyvendinti buvo sprendžiami šie pagrindiniai uždaviniai: 1. Nustatyti ir įvertinti jėgos ugdymo programos įtaką vežimėlių krepšinio žaidėjų jėgos rodiklių kaitai negalios sunkumo laipsnio aspektu (pagal klasifikacijos balus). 2. Nustatyti ir įvertinti jėgos programos poveikį vežimėlių krepšinio žaidėjų vežimėlio ir kamuolio valdymo specialiesiems gebėjimams ir palyginti su įprastinės programos rodikliais. 3. Nustatyti ir įvertinti jėgos poveikį vežimėlių krepšinio žaidėjų važiavimo vežimėliu specialiesiems gebėjimams ir palyginti su įprastinės programos rodikliais. 4. Nustatyti ir įvertinti jėgos programos poveikį vežimėlių krepšinio žaidėjų kamuolio metimo ir perdavimo tikslumo specialiesiems gebėjimams ir palyginti su įprastinės programos rodikliais. Tiriamieji dalyvavo Paraplegikų asociacijos Landšafto terapijos ir... [toliau žr. visą tekstą] / Most of the authors, researching on physical characteristics and special abilities indicators of basketball players with a various level of disability, noted that rates of the players with the highest degree of disability (on the scale of 1-2 points) are worse than of those with a disability on a slighter scale. However little research has been done on the influence of the programs dedicated to wheelchair basketball players’ physical characteristics and special abilities. In this case, new research on the influence of strength training program on wheelchair basketball players’ physical characteristics and special abilities is a matter of great relevance. Aim of the study: 1. Measure and evaluate the influence of strength training program on wheelchair basketball players’ physical characteristics. 2. Measure and evaluate the influence of strength training on wheelchair basketball players’ velocity and agility. 3. Measure and evaluate the influence of strength training on wheelchair basketball players’ aerobic and anaerobic endurance. 4. Measure and evaluate the influence of strength training on wheelchair basketball players’ aim to shoot and ball-passing accuracy special abilities. Volunteers participated in two-week ordinary program camp and two week strength training program camp, both held at Paraplegic Association Landscape Therapy and Recreation Centre in Monciskes in 2009. Special physical abilities tests were performed on 54 wheelchair basketball players. Based on... [to full text]

Tyrimo problema. Judesio tikslumas daug priklauso nuo pasirengimo atlikti veiksmą – parengiamosios fazės. Nustatyta, kad įgudusių krepšininkų parengiamieji judesiai, veiksmai teigiamai veikia baudos metimų tikslumą, tačiau nėra aišku kaip šie judesiai, veiksmai veikia pradedančiųjų krepšininkų metimų tikslumą. Tyrimo objektas: jaunųjų krepšininkų baudos metimų tikslumas. Hipotezė. Mėnesio trukmės mokymas parengiamųjų judesių, veiksmų ir jų sekos atliekant baudos metimą pagal Amberry (1996) metodiką turės teigiamos įtakos baudos metimų tikslumui. Tyrimo tikslas. Nustatyti ir įvertinti parengiamųjų judesių, veiksmų ir jų sekos poveikį jaunųjų krepšininkų baudų metimo tikslumui. Tyrimo uždaviniai: 1. Nustatyti ir įvertinti jaunųjų krepšininkų baudos metimo tikslumą iki ir po eksperimento; 2. Nustatyti vykdomus parengiamuosius judesius, veiksmus atliekant baudos metimą iki ir po eksperimento; 3. Nustatyti baudos metimų tikslumo kaitą eksperimento metu; Tyrimo rezultatai. Alytaus jaunųjų krepšininkų, atliekant 30 baudos metimų testą, kontrolinės grupės prieš eksperimentą, tikslių metimų vidurkis lygus 20,8 ± 3,4 (69,33 proc. baudos metimo tikslumas), o eksperimentinės – 19,6± 2,2 (65,33 proc. baudos metimo tikslumas). Gauti rezultatai po eksperimento parodė, jog kontrolinės grupės metimų vidurkis lygus 22,7 ± 2,0 (75,67 proc. baudos metimo tikslumas), o eksperimentinės – 23,9 ± 1,9 (79,67 proc. baudos metimo tikslumas). Įvertinus Kauno jaunųjų krepšininkų, atliekant 30 baudų... [toliau žr. visą tekstą] / The problem of research: Movement precision a lot depends on the preparation to perform an action-the preparation phase. It was found that skilled player’s preparatory movements, positively affect the accuracy of free throws, but it is not clear how these movements’ effect on beginner’s basketball player’s shot accuracy. The research object: youth basketball player’s free throws accuracy. Hypothesis. A month-long training of preparatory movements, actions and their sequencing before performing a free throw according to Amberry (1996) methodology will have a positive effect on the accuracy of free throws. Aim of the study. To identify and assess the preparatory movements, actions and their sequencing effect on youth basketball player’s free-throw accuracy. Objectives of the research: 1. Identify and assess youth basketball player’s free throw accuracy before and after experiment. 2. Identify ongoing preparatory movements and actions before performing a free throw, before and after experiment. 3. Identify free throws accuracy changes during the experiment. The research results. Alytus youth basketball players for 30free throws test, the control group average of accurate throws was 20.8 ± 3.4(69.33 percent of free throw accuracy) before the experiment, and the experimental - 19.6 ± 2.2 (65.33 percent of free throw accuracy). The obtained results of the experiment showed that the control group throws an average of 22.7 ± 2.0(75.67 percent of free throw accuracy), and the... [to full text]

Title: An analysis of the ofensive and defensive activities in set plays Objectives: The main objective of this work is to analyze the implementation of set-plays in the offensive phase of the game matches teams selected for the Champions League 2009/2010. Identification of the key moments leading to successful or unsuccessful completion. Description and graphical representation of the set-plays. Methods: In our work we used as the primary method of obtaining data on the phenomenon of mediated reference, registered observations. It is the indirect observation of DVDs with each team, where we watched our investigation established criteria. The research section has been used both quantitative and qualitative analysis. Quantitative analysis, we obtained data on the frequency of observed phenomena, qualitative analysis shows the critical points and the current developments in implementation of set-plays . Models based on the graphical representation we then facilitate the application of this knowledge in the training practical. Results: The results reveal the ways plays for set-plays were used in the Champions League 2009/2010 in the offensive phase of game and the negotiations in the process of defense. They point to developments and changes occurring with different frequency factors. Keywords:...

Made available in DSpace on 2016-04-28T19:59:12Z (GMT). No. of bitstreams: 1 Sergio Guilherme Cabral Bento.pdf: 727345 bytes, checksum: e8ab9d50ad915b3b70edc88e01e905dc (MD5) Previous issue date: 2008-09-10 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / In its modern concept, the myth is a behavioral paradigm, a symbolical model of an external reference. Based on that, this paper defends that the poem A throw of the dice , by Stéphane Mallarmé, acquires such mythical status, either by its cosmogonical nature which is commonly ignored by the critics -, or by its formalistic innovations reason why it got so acclaimed. Due to that, it suffered during the XX century a mythification process, in which it was promoted to be elected as one of the inspirational sources of recent and contemporary poetry. So that such approach was possible, the study was delimitated to a comparison between the proposed text to its re-creation in Portuguese, done by Haroldo de Campos. This dialogue translation / original not only updates the myth A throw of the dice by the ritualistic value the translation process has, but also allows the analysis to get closer to the current times. As an instrument for this exegesis, the Gestalt theories principles of form organization; concept of whole , which is not a mere addition of its parts, but has a unique quality aggregated; and the phenomenon of psiconeural correlation in human visual perception ensure that the poem will be considered in its totality, as a verbal, visual and sound entity. In short, it has been concluded that the poem A throw of the dice is a tale of the (re-) creation of the Universe, the human being and the Art, not under the guidance of a divine power, but generated by the human thinking, key factor in the new illuminist bourgeois society in Modern Age. The modern myth is formed / Em seu conceito moderno, o mito é um paradigma comportamental, um sistema semiológico de algum referente externo. Baseado nisto, este trabalho sustenta que o poema Um lance de dados , de Stéphane Mallarmé, adquire status mítico, quer pelo seu caráter cosmogônico comumente ignorado pela crítica quer pela sua inovação formal fato que o consagrou, e sob cujo prisma é unicamente lembrado. Em virtude disso, sofreu ao longo do século XX um processo de mitificação ao ser promovido à condição de uma das mais importantes fontes de inspiração da poesia recente e contemporânea. Para que tal abordagem fosse possível, buscou-se delimitar o estudo do texto proposto em correlação com sua recriação em língua portuguesa, feita por Haroldo de Campos. Tal diálogo tradução/original não apenas atualiza o mito Um lance de dados pelo valor ritualístico que possui o ato de traduzir, mas também permite à análise uma aproximação da contemporaneidade. Como instrumento de exegese, as teorias da Gestalt princípios de organização da forma; máxima de que o todo não é a mera soma das partes, mas possui uma qualidade diferenciada destas; e o fenômeno da correlação psiconeural na percepção visual humana asseguraram que a obra fosse considerada em sua totalidade, enquanto entidade visual, verbal e sonora. Deste modo, chegou-se à conclusão que Um lance de dados é um relato da (re-) criação do Universo, do ser humano e da Arte não sob a condução de uma força divina, mas gerada pelo pensamento humano, novo fator-chave na sociedade iluminista-burguesa da Modernidade. Está formado o mito moderno

Made available in DSpace on 2016-04-29T13:18:05Z (GMT). No. of bitstreams: 1 Cristiano Cedra.pdf: 426189 bytes, checksum: 6e02c6a26fd210dcadb0b0ef68cc7260 (MD5) Previous issue date: 2007-04-25 / The free throw is a kind of basketball shot and it occurs as a result of breaking some of the rules of the game. Approximately 25% of all points earned in a basketball game come from free throws. In basketball teaching or practicing, free throws are usually the first kind of shot taught, forming the basis for more advanced shooting techniques. Despite its importance, average free throw accuracy has been below 70%; only a few players have managed to achieve a higher average. In this paper a new method of free throw training is presented by progressive and gradual techniques aimed towards specifications changes in materials used in training (in this case, the diameter of the basketball rim and its height). Starting from basic conditions (larger diameters and lower baskets) to those seen as more complex (basketball s official specifications), trying to reach gradually the average accuracy in professional basketball free throwing. In this research, 12 athletes aged from 13 to 14 years old were chosen from a competitive basketball team to participate in it. Then, they were submitted to two stages at the baseline condition. In the first stage, 39 sessions of 10 free throws were shot in each session. In the second stage, the athletes had 13 sessions of 30 shots in each session, out of which 10 were shot from the official free throw line, 10 from an intermediate distance between the free throw line and the basket and the last 10 were shot very close to the basket. After this stage, the athletes were divided into two groups: group 1 was submitted to an intervention related to the diameter of the basket and group 2, to an intervention related to the height of the basket. The fading procedure was identical for both groups that went through the multielement baseline design. Each athlete went through 9 fading practice stages, and, in every stage, should score at least 70% of the free throws to go on to the next stage. Stage 1 was carried out using a closer distance to the basket and a larger diameter (group 1) or a lower height (group 2). Progressively, the distance was increased, passing through the intermediate distance until reaching the official free throw distance, keeping to the same diameter and height specifications. When the athlete reached the official distance, he would go back to the starting line and resume his shooting but now the diameter and height would be set to the intermediate specifications. Gradually, the athlete should reach the official distance and specifications of basketball. The next stage was identical to the baseline condition and had the purpose of evaluating whether the results achieved in the last modified stage would last once the treatment was removed. Analyzing the results, it is made clear that practicing shots through repetition did not produce the results expected in the selected group, at best, it only established their previous marks. Being exposed to different distances without using progression through fading also did not bring improvements to the performance of the athletes and the level of accuracy in the closest distance was higher than in the intermediate distance, which was also higher than in the official distance suggesting that distance is a decisive factor when evaluating basketball shots. While group 1 achieved an overall improvement throughout the practice, some of the athletes in group 2 actually showed a loss in performance, suggesting that the diameter of the rim is, in fact, a more critical factor than the height of the basket. The fading procedure has brought improvements to the level of accuracy of the evaluated athlet / O lance livre é um tipo de arremesso do basquetebol e ocorre como conseqüência a algumas infrações à regra deste jogo. Aproximadamente, 25% dos pontos do jogo de basquetebol vêm do lance livre. No ensino e treinamento do basquetebol é o primeiro tipo de arremesso a ser ensinado servindo de base para os demais. Apesar da sua importância, as médias de acertos nestas situações tem sido inferiores a 70%, apenas alguns jogadores atingem médias superiores. Neste trabalho apresentamos um novo método de treinamento de lances livres através das técnicas de mudança gradual e progressiva das alterações nas especificações dos materiais utilizados nos treinos (no caso, o diâmetro do aro da cesta e a altura da cesta), indo de condições consideradas como mais simples (diâmetros maiores e cestas em alturas mais baixas) para aquelas vistas como mais complexas (especificações oficiais), tentando, gradualmente, atingir o objetivo de acertos dos arremessos de lances livres na cesta oficial do basquetebol. Foram participantes desta pesquisa 12 atletas, com idade entre 13 e 14 anos, integrantes de uma equipe competitiva de basquetebol. Estes foram submetidos a duas fases na linha de base. Na fase 1, realizaram 39 sessões com 10 arremessos de lances livres em cada sessão. Na fase 2, realizaram 13 sessões com 30 arremessos em cada sessão, sendo 10 da distância oficial de lance livre, 10 de uma distância intermediária entre a linha do lance livre e a cesta, e mais 10 bem próximos da cesta. Após esta etapa, os atletas foram divididos em dois grupos: o grupo 1 foi submetido à intervenção relacionada a dimensão diâmetro da cesta; e o grupo 2 à intervenção relacionada a dimensão altura da cesta. O procedimento de fading ou esvanecimento foi idêntico para ambos os grupos que passaram pelo delineamento de linha base múltipla entre participantes. Cada atleta passou por 9 fases de fading, e, em cada uma delas, deveria acertar pelo menos 70% dos arremessos para progredir para a fase seguinte. A fase 1 era realizada com distância próxima da cesta e diâmetro maior (grupo 1) ou altura menor (grupo 2). Progressivamente, a distância era aumentada, passando pela distância intermediária até chegar à distância oficial do lance livre, mantendo-se a mesma especificação da dimensão diâmetro ou altura. Quando o atleta chegava à distância oficial, ele voltava a arremessar de bem próximo da cesta, mas agora com a dimensão diâmetro e altura com especificações médias. Gradualmente, o atleta deveria chegar à distância e dimensão oficiais do basquetebol. A etapa seguimento foi idêntica à etapa de linha de base e tinha como objetivo avaliar se os resultados produzidos na última fase da intervenção se mantinham após a retirada do tratamento. Nos resultados, percebemos que a repetição do ato de arremessar não produziu melhoras no desempenho dos atletas avaliados, no máximo, estabilizou seus resultados. A exposição a diferentes distâncias sem a utilização da progressão através do fading também não produziu melhoras no desempenho destes atletas e o índice de acertos na distância próxima foi maior do que na distância intermediária, que por sua vez foi maior do que na distância oficial, sugerindo que a distância é uma variável crítica quando avaliamos o arremesso. O grupo 1 obteve melhoras durante a intervenção que se mantiveram durante o seguimento e no grupo 2, alguns atletas também obtiveram melhoras durante a intervenção, mas para alguns participantes estes resultados diminuíram no seguimento, sugerindo assim, que a dimensão diâmetro foi mais crítica para estes atletas do que a dimensão altura. O procedimento de fading promoveu melhoras no índice de acertos dos atletas avaliados

This thesis is devoted to the search of the level of physical abilities of today's younger school-age children in comparison with the results of the 'Children's fitness badge' competition. Data comes from two smaller schools of the Central Bohemian region - Kounice Elementary School, year 1989 and from elementary school Sedlčany, year 2015. The thesis also discusses the differences between results in physically active and inactive pupils, between boys and girls, as well as the ability of today's students to meet the elementary level of the 'Children's fitness badge' points table. I studied these disciplines - the long jump, the 50 meters sprint and the cricket ball throw for my testing. Data were analyzed by using the statistical program SPSS. Key words Athletics, 'Children's fitness badge', younger school-age, long jump, 50 meters sprint, cricket ball throw.

This thesis is devoted to the topic of detection of the level in selected disciplines of today's younger school-age children in comparison with the results of the 'Children's fitness badge' competition. Data comes from two smaller schools of the Central Bohemian region - Kounice Elementary School, year 1989 and from elementary school Sedlčany, year 2015. The thesis also discusses the differences between results in physically active and inactive pupils, between boys and girls, as well as the ability of today's students to meet the elementary level of the 'Children's fitness badge' points table. I study these disciplines - the standing long jump, the 50 meters sprint and the cricket ball throw for my testing. The practical part is realized by the measuring performance in certain disciplines. The performance of boys and girls in each grade are measured separately. Their performances are compared and evaluated by using a test battery 'Children's fitness badge'.

Set-pieces such as free-kicks and corners have been thoroughly examined in studies related to football analytics in recent years. However, little focus has been put on the most frequently occurring set-piece: the throw-in. This project aims to investigate how football teams can optimize their throw-in tactics in order to improve the chance of taking a successful throw-in. Two different definitions of what constitutes a successful throw-in are considered, firstly if the ball is kept in possession and secondly if a goal chance is created after the throw-in. The analysis is conducted using logistic regression, as this model comes with high interpretability, making it easier for players and coaches to gain direct insights from the results. A substantial focus is put on the investigation of the logistic regression assumptions, with the greatest emphasis being put on the linearity assumption. The results suggest that long throws directed towards the opposition’s goal are the most effective for creating goal-scoring opportunities from throw-ins taken in the attacking third of the pitch. However, if the throw-in is taken in the middle or defensive regions of the pitch, the results interestingly indicate that throwing the ball backwards leads to increased chance of scoring. When it comes to retaining the ball possession, the results suggest that throwing the ball backwards is an effective strategy regardless of the pitch position. Moreover, the project outlines how feature transformations can be used to improve the fitting of the logistic regression model. However, it turns out that the most significant improvement in accuracy of logistic regression occurs when incorporating additional relevant features into the model. In such case, the logistic regression model achieves a predictive power comparable to more advanced machine learning methods. / Fasta situationer såsom frisparkar och hörnor har varit välstuderade i studier rörande fotbollsanalys de senaste åren. Lite fokus har emellertid lagts på den vanligast förekommande fasta situationen: inkastet. Detta projekt syftar till att undersöka hur fotbollslag kan optimera sin inkasttaktik för att förbättra möjligheterna till att genomföra ett lyckat inkast. Två olika definitioner av vad som utgör ett lyckat inkast beaktas, dels om bollinnehavet behålls och dels om en målchans skapas efter inkastet. Analysen görs med logistisk regression eftersom denna modell har hög tolkningsbarhet, vilket gör det lättare för spelare och tränare att få direkta insikter från resultaten. Stort fokus läggs på undersökning av de logistiska regressionsantagandena, där störst vikt läggs på antagandet gällande linjäritet. Resultaten tyder på att långa inkast riktade mot motståndarnas mål är de mest gynnsamma för att skapa en målchans från inkast tagna i den offensiva tredjedelen av planen. Om inkastet istället tas från de mellersta eller defensiva delarna av planen tyder resultaten intressant nog på att inkast riktade bakåt leder till ökad chans till att göra mål. När det kommer till att behålla bollinnehavet visar resultaten att kast bakåt är en gynnsam strategi, oavsett var på planen inkasten tas ifrån. Vidare visar projektet hur variabeltransformationer kan användas för att förbättra modellanpassningen för logistisk regression. Det visar sig dock att den tydligaste förbättringen fås då fler relevanta variabler läggs till i modellen. I sådant fall, får logistisk regression en prediktiv förmåga som är jämförbar med mer avancerade maskininlärningsmetoder.